dieselho

Did a search for an hour and had no results. Question is did my 01 come with one? Thanks.

Purplezr2

nope

johnh

nox2

nkennedy

98.5 thru 02 didn't have cats. Maybe the Calif. trucks, but not the regular version.

DodgenIt

I didn't have a cat on my 02, but I did have a resignator with my muffler.

klcammie

My 01 did not have one.

KATOOM

2nd gen 24 valve trucks did NOT come with a catalytic convertor. They came with a resonator and a muffler. No smog emission equipment.

Slugblaster

Would you need a resonater and muffler to get smogged now

KATOOM

No. Neither of those components have anything to do with emissions.

Clunk

I don't have a cat and pass the local sniff yearly.

gadget.35-06

Mornin', Clunk!

KATOOM

Do they actually do a "sniff" test in Tenn.?

Clunk

Mornin' Gadget!

Kinda, it's an opacity/smoke particle count test at idle speed on '01's and earlier. '02 & newer gets the OBDII diag. port plugin.
P-pump 12 valvers & CR's require cats in a few counties.

KATOOM

Really? So they actually use a device to measure instead of just a visual test? And with the '02's and newer, do they do the same as the earlier models but also the OBDII?

Clunk

Yup, the opalcity device "sees" particles in the exhaust stream...looks like a big MAF sensor.
The test dude said a stack is ok as long as they can easily attach the device.
The '02 & newer gets the OBDII port plug-in, no opalcity.
All get a mirror under the truck visual check. No hood opening.